丰乐地区葡萄花油层断裂系统分形特征及其对油气成藏的控制作用

发布时间：2018-02-16 17:19

本文关键词： 丰乐地区葡萄花油层油源断层晚期调整型断层分形分维　出处：《大庆石油地质与开发》2017年05期 　论文类型：期刊论文

【摘要】：为分析坳陷期张应力与构造反转期压扭性应力对丰乐地区葡萄花油层断裂发育与分布的双重影响,从断层断穿层位以及断层形成的应力环境出发,将断穿葡萄花油层不同时期的断层划分为油源断层和晚期调整型断层,结合这两类断裂系统的分形特征,分别刻画了油源断层和晚期调整型断层分维值。研究结果表明:丰乐地区油气有利区主要分布于油源断层分维值的高值区、晚期调整型断层分维值的低值区,即丰乐地区的西北部以及中部地区;而丰乐地区东部三肇凹陷—朝阳沟阶地地区,后期调整性断层的分维值较高,后期断裂活动较强,使得保存条件较差,不利于油气聚集成藏。这一认识不仅有力地指导了丰乐地区油气勘探,而且为周边含油气区寻找剩余油提供了借鉴。
[Abstract]:In order to analyze the double effects of tensile stress in depression period and compressive and torsional stress during tectonic inversion on the development and distribution of fault in Gaohua oil reservoir in Fengle area, starting from the fault fault penetrating layer and the stress environment of fault formation, According to the fractal characteristics of these two fault systems, the faults in different periods of the faulted Grape flower reservoir are divided into oil source faults and late adjustment faults. The fractal dimension values of oil source faults and late adjusted faults are described respectively. The results show that the favorable areas of oil and gas in Fengle area are mainly distributed in the areas with high fractal dimension of oil source faults and those with low fractal dimensions of late adjusted faults. That is, the northwest and central areas of Fengle area, while in the Sanzhao sag and Chaoyang ditch terrace in the east of Fengle, the fractal dimension of the late regulated faults is higher, and the later fault activity is stronger, which makes the preservation conditions worse. This understanding not only guides the exploration of oil and gas in Fengle area, but also provides a reference for looking for the remaining oil in the surrounding oil-bearing areas.
【作者单位】：大庆油田有限责任公司勘探开发研究院;
【基金】：国家重大科技专项“低渗、特低渗复杂油藏规模有效动用关键技术”(2017ZX05013-006)
【分类号】：P618.13

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